The policy brief examines the rise of ad-hoc security initiatives (ASIs) as an established type of collective security mechanism. ASIs are intended to eliminate threats posed by non-state armed groups, and operate across the borders of participating countries to enable the pursuit of such groups. ASIs have emerged because existing African Peace and Security Architecture (APSA) mechanisms were not specific or responsive enough to meet this ongoing need. The Regional Cooperation Initiative for the Elimination of the Lord’s Resistance Army, the Multinational Joint Task Force, and the G5 Sahel can all be categorised as ASIs.